public class Training02 {
    public static void main(String[] args) {
        int sum1 = add(4,4);
        int sum2 = add(5,5);
        System.out.println("s1");
        System.out.println("");
    }
    public static int add (int x,int y){
        return x * y/2;
    }
    public static double add (double x,double y) {
        return x * y/2;
    }
}
